Porous casting repairs.

[Blatman]

Whilst my head is off for a porting job, I'm tempted to put it in to a company called Ultraseal who impregnate castings with a resin that seals porosity. I have always had a niggling doubt about my aluminium (Cosworth YB) head, and being as it's stripped anyway, thought I'd go for the belt an' braces approach, to remove that particular niggle. Any-one else had similar treatment, or experiencesquestion.gif

 

Edited by - Blatman on 15 Feb 2002 18:22:58

[8vastra]

not sure if its the same thing, but 16v vauxhall cast XE engines do tend to suffer from the oilway being too close to a waterway and it erodes -> porous head

 

there are a few companies who deal with this, headway in north wales is regarded as being one of the better ones 01244 821921. they can do all sorts i am told.

not heard of Ultraseal and its probably a lot closer to you, but hey. to repair those problems outlined above it costs around 200-250 quid, but as i said i dont know what leads to a porous YB head.

 

HTH a little bit :)

[Blatman]

Ta.

FWIW, Ultraseal are 30 mins from my house, and a repair plus pressure test to ensure that the problem is cured comes to £85 quidcool.gif

It's almost a no brainer, but I also don't want to waste 85 sheets if there are pitfalls.

[oilyhands]

I've used Ultraseal a number of times Blat, make sure you completely strip the head including the stem seals or the sealant will collect in all sorts of places. The treatments is very effective but leaves the head covered in a very fine layer of rubbery/plasticky residue. Very effective repair can be made to specific parts of the head using Devcon aluminiumised epoxy (or of course by welding).

 

Oily

[Blatman]

I was led to believe that they will wash the residue off (for a price, of course). I wasn't planning on doing the valve guides/stem seals, as you know...........

You have mail too wink.gif